Real World Camera Raw with Adobe Photoshop CS- P6

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Real World Camera Raw with Adobe Photoshop CS- P6: If you're reading this book because you want to be told that digital really is better than film, look elsewhere. Those discussions tend to generate a lot more heat thanlight, andifyouaren't at least contemplatingshootingdigital for some or all of your work, this book isn't relevant.

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  1. 132 Real World Camera Raw with Adobe Photoshop CS Working with saved settings subsets. Often, I need to apply more individualized settings to each image, so one of the first things I did when I first started working with Camera Raw was to save subsets of settings that I could apply to images. In addition to creating Calibrate settings, I've created saved settings for exposure adjustmentsin 0.25-stop increments, and Brightness and Contrast adjustments in increments of 10 units-see Figure 4-21. I've played with savingwhite Balance adjustments, but thus far I've found them less useful because I usually need to adjust the Tem- perature andTint controls interactively. But I almost invariablyshoot with available light. If you shoot in the studio under controlled lighting, you may find it worthwhile to save White Balance settings too. See "Saving Settings" in Chapter 3, Using Camera Raw. Figure 4-21 Working with saved8ettinga Ihese settings areall saved as presets in Camera Raw's Presets folder. Each one updates a single parameter,Exposure, Brightness, or Contrast. Obviously there's a trade-off between the number of settings you save and the ease with which you can find and apply them. I you create hun- f dreds of subsets, your Camera Raw Settings menu will become very long and unmanageable.After you've spent some time applying settings from the Fie Browser, it should be apparent which settings are really useful to you and exactly what trade-off you need to make between the number of saved settings and the usability of the Camera Raw Settings menu. The key to being productive when applying subsets is to apply them to all the images that need them simultaneous^, which boils down to selecting
  2. Chapter 4: The File Browser 133 images that all need the same (orverysimilar)treatment. For example, Imay look for all the images that need a +0.25-stopexposure boost, then for the ones that need a half-stop, and so on. The image thumbnails and previews update to reflect the new settings, so checking the preview at a reasonably large size gives me a good idea of their effect. Opening images. Once you've applied settings to an image or images, you can open them and bypass the Camera Raw dialogboxby Shift-double- clicking. (Ifyou're opening multipleimages, Shift-double-clickon the last one; otherwise you'll just change the selection.) Add Option if you also want to close the File Browser. Camera Raw then processes the images using their assigned settings and opens the converted imagesin Photoshop.However, ifI'm dealingwith more than a handful of images, I almost invariably run a batch process instead, by choosing Batch from the File Bmwser'sAutomate menu+ee Figure 4-22. Figure 4-22 Sat& dialog baa This batch process conwrts the select& images using each image's individual sem'ngs. It then calls an action that sharpens, adds an adjust- ment Lryer,and saws the layeredfileas a TlEE addingafour-digit serial number to the original document name.
  3. 134 Real World Camera Raw with Adobe Photoshop CS Using Batch. The Batch feature lets you process images with CameraRaw and, optionally, rename and save them to a different location, wh'ie also applying an action. Includiig an action in the batch allows for tremendous flexibility in automating different tasks. For example, I use one action to batch the creation of 1,024-pixelJPEGsand another to save 16-bitlchannel TIFFSwith adjustment layers included ready for editing,using Zip compres- sion to save storage space. Aaions like these save me hours of repetitive grunt work, which is after all what computers are supposed to do. There are, however, a few stumbling blocks that can trip you up when you first try to implement this kind of automation. b If you want the batch process to save the images in a specific format, you need to record the saving steps as part of the action you'll call for the batch. b If you want to bypass the Camera Raw interface when you run the batch, you must check Suppress Fie Open Options Dialogs in the Batch dialog box (see Figure 4-22). It's probably a good idea to check Suppress Color Profile Warnings too, just in case your working space isn't set the way you thought it was. (It's always frustrating to start a batch process, go for lunch, then come back to find that the Profile Mismatch warning for the first image is sitting on the screen waiting for input.) b If your action included a save, you must check Override Action "Save As" Commands. Otherwise the batch will try to save each file under the name you used for the save when you recorded the action, and it will stop on the second image when Photoshop asks you if you want to replace the previous image of the same name. Figure 4-23 shows the two aforementioned actions, one for creating JPEGs that are converted to sRGB after the sharpening and resizing have been carried out on the 16-bitlchannel ProPhoto RGB file, and another that prepares images for final editing in Photoshop by adding adjustment layers set to Multiply, Screen, and Overlay, and named Darken, Lighten, and Contrast, respectively.The action turns off the layers'visibilityso that when I open the image, I see it with no adjustments--that way it's easy for me to decide what it needs, turn on the appropriate layers, and tweak their opacities to get the desired effect. I'll look at actions, batch process- ing, and other automation features in much more detail in Chapter 7, ExploitingAutomation.
  4. -- Chapter .The File Browser : 135 Figure 4-23 This action when included in a Useful actlo118 batch, opens the mw imageand converts it ton 16-bitlchannel RGB image using the assigned Cam- era Raw settings. It then applies Pixel Genius'sPhotoKit Gzphm Sharpener, doumsizes the image t o 1,024-pireI width, sets the molu- tion to 72 ppi, m n m the image to sRGB, downsamples to 8 bitsl channel,and s a w the result as a IPEG with a quality of 10. This action, when included in a batch, opens the raw imageand conmen3 it m a 16-bitlchannelRGB image using the assigned Gzmem Raw sem'ngs. It then adds a C u m adjustmentlayer (with no c u m adjustment applied) set to Multiply, r a m s the layer as"Darken,"and hides it. Itadds two more such layers,one set to Screen and named Zighten,"another set m Overlay and named "Contrast." Finally,it s a w the image as a 16-bitlchannel TIFE with Z[P compression applied to both the image and the layers.When I open the file, it's ready@rediting mWIthout having to do thegrunt my work ofadding the Lryers and setling the blending modes.
  5. 136 Real World Camera Raw with Adobe Photoshop CS It's Smart to Be Lazy Any way you slice it, shooting digital virtually guarantees that you'll spend more time in front of the computer and less time behind the lens. But the power of automation is there to let you make sure that when you aresitting in front of the computer, you're doing so because your critical judgment is required. Digital capture involves processing masses of data-the files them- selves may be smaller than film scans, but you'll almost certainly have to deal with a lot more of them. One of the great things about computers is that once you've figured out how to make the computer do something, you can make it do that something over and over again. So if you find yourself doing the same thiigs to images over and over again, you can save yourself a great deal of work by teaching Photoshop how to do them for you. That way, you can concentrate on the exciting stuff. 1'11 look at automation in detail in Chapter 7, ExploitingAutomution. But first, I'll take a step back and look at the bigger picture as I build a workflow from start to finish in the next chapter, It's AlZAbout the Workflow.
  6. It's All ) Aboutthe Workflow That's Flow, Not Slow In the previous two chapters, I've shown you how to drive Camera Raw and the Fie Browser in detail (some might say excruciating detail). But knowing what buttons to push to get the desired result just means you know how to do the work. To turn that understanding into a practical workflow, you need to understand and optimize each part of the process. So in this chapter, I'll look at some important details, but I'U put them in the context of the big picture. There are four basic stages in a raw workflow. You may revisit some of them--going back and looking at the initial rejects, or processing the images to Werent kinds of output file--but everything you do falls into one of four stages. b You start by copying the raw images to the computer. b You point the File Browser at the newly copied images and let it cache the thumbnails, previews, and metadata. b You work with the images in the File Browser, selecting, sorting, applying metadata, and editing with Camera Raw. b You process the raw images to output files.
  7. 138 Real World Camera Raw with Adobe Photoshop CS In this chapter, I'll look at all four stages of the workflow, but the major emphasis is on the work you do in the File Browser, because the File Browser really is command central for an efficient raw workflow. The File Browser The File Browser lets you make your initial selects, add copyright and keyword metadata, sort your images in the order you want, rename them to reflect that order, and apply Camera Raw settings that get the most out of the capture. By far the most efficient way to convert the raw files to output files is to do so as a batch, using the selected images in the Fie Browser as a source. Once you've completed your workin the Fie Browser, it's trivial to produce dierent versions of your images for diierent purposes-low-res JPEGsfor web or email, higher-res JPEGsorweb photo galleries for client review, or 16-bit high-res images delivered into Pbotoshop for final polishing prior to final delivery. But you need to do the workin the Fie Browser first, and since it forms the basis for just about everythingelse you do, it's important to understand just howthat workgets saved and store by Photoshop. Solet me state, very clearly, what information each of these key components stores. b Image thumbnails, previews, flagging, ranking, rotation, and sort order are stored in the File Browser cache. b AU the other information about your images-keywords, and every- thing that appears in the Metadata p a l e t t e i s stored in the sidecar .xmp file, with the possible exception of Camera Raw settings.You can choose whether to store these in the sidecar .xmp or in the Camera Raw database. I recommend storing them in the sidecar .xmp files for reasons that will become apparent later in this chapter. Understanding how to handle the Fie Browser cache and the sidecar .xmp files is key to building an efficient workflow. Without this under- standing, you're liable to wind up cursing as you redo work you thought you'd already completed. So I'll be referring to the cache and the .xmp files throughout the chapter.
  8. Chapter 5: It's All About the Workflow 139 The litst order of business, though, is to transfer your raw images safely to the computer so that you can begin working with them. So I'll start by looking at the very litst stage of the worktlow--getting your images off the camera storage media and onto your hard drive--because mistakes made there can wreck your entire day's shoot. Storing and Transferring Raw Images The workflow starts with your in-camera storage media, typically but not invariably Compact Flash '@pe I or 11.Transferring your images from the camera to the computer is one of the most critical, yet often one of the least examined, stages of your workflow. The following ground rules have stood me in good stead for several years--I've had my share of equipment problems, but thus far, I've yet to lose a single image. b Don't use the camera as a card reader. Most cameras will let you con- nect them to the computer and download your images, but doing so is a bad idea for at least two reasons. Cameras are typically very slow as card readers, and when the camera is being used as a card reader, you can't shoot with it. r Never open images directly from the camera media. b Don't rely on just one copy of the imagecalways copy them to two separate drives before you start working. b Don't erase your images from the camera media until you've verified the copies--see "Verifying Images," later in this chapter. b Always format the cards in the camera in which they will be shot, never in the computer. Following these rules may take a Little additional time up front, but they will save you time in the long run. Camera Media and Speed AU CF cards are not created equal, but vendor designations l i e 4x, 24x, 40x, Ultra, and Write Accelerated aren't terribly reliable guides as to the performance you'll get with your personal setup.
  9. 140 Real World Camera Raw with Adobe Photoshop CS There are two distinctly different aspects to CF card speed. b Your burst shooting rate is dictated by the speed with which the CF card writes images in the camera. b Your image offloadingspeed is dictated by the speed with which im- ages can be read from the CF card onto your computer's hard disk. In either case, the bottleneckmaybe the CF Card, or it may be the hard- ware used to write to it (your camera) or read from it (your card reader). Compact Flash write speed. Most of today's high-speed CF cards can write data as fast as the camera can send it. However, older cameras may not be able to deliver the data fast enough to justify the premium prices the fastest cards command. One good source of comparative data on different cameras' write speeds to different cards can be found on Rob Galbraith's web site, www. robgalbraith.com-look for the CF Databaselink on the front page. Note that the database no longer gets updated for some older cameras, so if the notes say something to the effect of "this camera will benefit from the fastest card available,"look in the table to check which card that actually was and when that page was last updated. Compact Flash read speed. The card reader and even the operating system can play an equal role in determining read speed to that of the card itself. Card readers almost invariably use one of three interfaces:USB 1.1, USB 2.0, or FireWire. Almost any card available today can max out the speed of a USB 1.1 reader. In theory, USB 2.0 is faster than FireWire, but in practice, as the EPA says, "your mileage may vary"- generally found Firewire to be both I've faster and more reliable than USB 2.0, particularly with fast cards such as the SanDisk Ultra I1 and Extreme and the Lexar 40x product lines. Mac OS X users should take note that OS X versions prior to Panther (0s10.3) were very slow at reading 2GB and larger cards that use FAT-32 formatting. Panther fixed the problem. Microdrives. In addition to solid-state Compact Flash cards, micro- drives--miniature hard disks in Compact Flash form factor-are also available. Microdrives were introduced when solid-state CF cards were still quite limited in both speed and capacity.
  10. Chapter 5: It's All About the Workflow 141 Today,solid-stateCF cards have outstripped microdrives in both ca- p a w & speed, and they also have enormous advantages in durability. Like allharddrives, microdrives use moving parts machined to very line tolerances, so they don't respond well to impacts- easy to destroy both it's the data and the drive itselfbydroppingit. Solid-stateCF cards are a great deal more robust-while I don't recommend abusing them in any way, I have one that survived being run over by a Ford Explorer! Basically, microdrives seemed like a good idea at the time, but you're much better off using today's fast solid-state CF cards- can keep the you microdrives around for emergencies. Secure Digital(SD) cards. Ifmicrodrivesare the wave of the past,Secure Digital (SD) cards are the wave of the future, though at the time of this writing only a couple of camerassupport them. The mainimpetus behind the development of SD is the built-in encryption, which is inviting for the music and movie industries, since it will let them distribute copyrighted material digitally. For camera use, SD is simply too new for me to be able to say much about it, other than that it's currently a little slower than the fastest CF cards and the capacities are still lower than the largest CF cards. Both of these statements are subject to change. AU the recommendations for handling and using CF cards apply equally to SD. Formatting Camera Media Always format your camera media, whether CF card, microdrive, or SD card, in the camera in which it will be used! Your computer may appear to let you format the card while it's loaded in the card reader, but it's quite likely that it will either do so incorrectly or offer you a set of options from which it's easy to make the wrong choice. @& Formatting CF cards on Windows systems can, at least in theory, be -:. done correctly, but the only time I'd recommend doing so is ifyou've used ,k, software supplied by the card vendor to perform data recovery or diag- ! nostics and the software recommends formatting. Formatting CF cards under any flavor of the Mac OS is a recipe for disaster. Formattingcards in the camera in which they will be used is always safe and guarantees that the format will be the one your camera can use.
  11. 142 Real World Camera Raw with Adobe Photoshop CS Tip: When Disaster Strikes. Ifyou wind up with a card that's unreadable but contains data youwant to recover (it's rare, but it can be caused by doing things l i e pulling the card out of the reader without first ejecting it in soft- ware),do notformat it! Doing so will guarantee that any data that was still on the cardwill be permanently consigned to the bitbucket. Major CF card vendors such as SanDiskand Lexar include data-recovery software with the cards (which for my money is sufficient reason to stickwith those brands). Before attempting anything else, try the recoverysoftware. If that fails, and the data is truly irreplaceable, several companies offer data recovery from CF cards, usually at a fairly heftyprice--a Google search for "Compact Flash Data Recovery" will turn up all the major players. Camera Card Capacities Bigger isn't always better, and in the case of CF cards,large capacities often come at premium prices. A 4GB card will generally cost more than twice as much as a 2GB one, and so on. Using two smaller cards rather than one big one offers an immediate workflow advantage. When the first card is f l ,you can switch to the sec- ul ond one to continue shooting while the first card is being copied to the computer. B the time the second card is full, the first one will have finished y copying, and you can format it in the camera and continue shooting. Acquiring Images I always copy images onto a hard drive before attempting to open them. (Actually,I always copy the images onto two differenthard drives. I may be paranoid, but I've yet to lose a digital capture.) It's possible to connect the camera to your computer and actually open the images while they're still on the CF card. It's likewise possible to put the CF card in a card reader and open the images directly from the CF card. But "possible" doesn't mean it's a good idea! It's possible to run a Porsche on kerosene or to perform brain surgerywith a rusty Phiips screwdriver, and I consider either one about as advisable as opening images directly from the camera media. I always copy to two hard drives for the simple reason that hard drives break, usually at the least convenient moment they could possibly choose to do so. If you simply can't take the time to make two copies, consider
  12. Chapter 5: It's All About the Workflow 143 setting up a mirrored (not striped) RAID array. Mirrored RAID arrays copy the data to two drives simultaneously, so unless both drives fail simultane- ously (whichis extremely unlikely),you'll always have a copy of the data. You can even kill two birds with a single stone by using a casing that allows hot-swapping of the drives, and use the drive mechanisms them- selves, suitably boxed, to archive the data-hard disks are much faster than CD-R or DVD-R;will almost certainlylast at least as long, particularly if they're simply being stored; and can cost less than a dollar per giga- byte--see the next section, "Archiving Images." However you choose to accomplish the task, my overriding recommen- dation is that you wait until the copy from camera media to hard drive is complete before you t y to do anything at all to the images. r Archiving Images I've heard of photographers who don't bother to archive their raw images once they've processed them to gamma-correctedcolor ones. That seems about as sensible to me as throwing out all your negatives because you've made prints that you like! Given the huge amount of processing that goes into converting a digital raw capture and the fact that the techniques for doing said conversions are only likely to get better, it seems extraordinarily short-sighted at best not to archive your raw captures. The issues then become when, in what form, and on what media you archive them. When to archive. I confess that there may be an element of superstition in this, but I like to archive my raw captures preserving the original file names and folder structures createdinthe camera, before doing any edit- ingof the images or the metadata. When I first copy the raw images to the computer, I always copy them to two different drives. One copy becomes my working copy, the other serves first as a short-term backup and then as a long-term archive. Once I've done my selecting, sorting, ranking, and renaming, and I've applied initial Camera Raw edits, I archive this too.Yes, it makes for a heavy storage requirement, but storage space is relatively inexpensive, time is expensive, and images are irreplaceable.
  13. 144 Real World Camera Raw with Adobe Photoshop CS What to archive. Youshould archiveanythingyouwant yourself or some- one else to be able to retrieve at some unspecified time in the future. It's really that simple. Don't confuse archives and backups. Backups are usually automated, incremental copies that reflect the current state of your system. Archives are long-term storage, designed to remain undisturbed unless and until the data is required. An archive isn't a substitute for backups, and backing up isn't a substitute for archiving! Archive media. Strictly speaking, there's no such thing as an archival medium for digital storageany of the even slightly convenient solutions available for recording ones and zeroes will degrade over time. Archives must be maintained! There are redly two problems in archival storage. The obvious one is the integrity of the storage medium. The less obvious but equally critical one is the availability of devices that can read the storage medium. There's probably still magnetic tape from 1970s mainframes that has good data on it, but good luck finding a drive that can read it. Any archiving strategy must include periodic refreshing of the data onto new media, preferably taking advantage of improvements in technology. I've migrated most of my early-90s CD-ROMs onto either DVD-Rs or to large-capacity hard disks, and unless something better comes along I'll probably refresh that data onto the larger, faster, cheaper hard disks that will be available in three or four years. Burnable CDs and DVDs, both read-only and rewritable, differ from commercially pressed CDs and DVDs in an important way. In the com- mercially manufactured disks, the data is stamped on a foil layer made of metal. (It's about the same thickness as the foil in a cigarette pack, but it's metal nonetheless.) Burnable CDs and DVDs use aphotosensitive dye layer to record the data-the dye changes color when the laser writes to it. Photographers should be well aware of the fragility of dyes.... So use whatever storage medium you find convenient, but recognize that it will fail, and plan accordingly.
  14. Chapter 5: It's All About the Workflow 145 Loading Images in the File Browser Once you've copied the raw files to your hard disk, the next thing to do is to point the Fie Browser at the folder containing the raw images. The Fie Browser is command central for dealing with hundreds of images. You'll use it to make your initial selects, to apply and edit metadata including Camera Rawsettings, and to control the processingof the raw images into a deliverable form. But before you start doing any of these things, give the File Browser a few minutes to generate the thumbnails and previews and to read the image metadata. Doing so serves two purposes. b Editing, and in particular the display of previews, goes much faster once the File Browser has generated and cached the thumbnails and previews. I've heard several complaints to the effect that the File Brows- er is agonizingly slow for editing, but when pressed, it always seems that those who complain fail to wait the couple of minutes to let the File Browser get itself organized, with the result that it is indeed ago- nizingly slow. b If there's a problem with any of the raw files, it will almost certainly show up in the Fie Browser, so you can deal with it beforeyou reformat the camera media and lose the original data. If you don't let the File Browser build its cache before you start working, you'll be fighting every inch of the way, so let it take the short time it needs to cache the images before trying to do anything else--see "Feeding the Cache," later in this chapter, for more detail on the process. Key Preference Settings Four key preference settings will help your work go smoothly, one set in Camera Raw, the others in the File Browser. My advice is to set 'em and forget 'em, because it's extremely unlikely that you'll ever want to change them. Just remember to check them in the event that you're forced to do a clean installation of either your OS or Photoshop, because either one may trash the preferences.
  15. 146 Real World Camera Raw with Adobe Photoshop CS Camera Raw Preferences. Openarawimage to launch CameraRaw.Make sure that the Advanced radio button is set, then choose Preferences from the Camera Raw menu and make sure that your Camera Raw Preferences are set to "Save image settings in sidecar ".xmpPP files"- Figure 5-1. Figure 5-1 Save image settings File Browser Preferences. The first two of these settings are manda- tory for a reliable worknow. The third is merelystrongly encouraged-see Figure 5-2. Figure 5-2 File Bmwser Preferenm b Keep Sidecar flea with Master Files. This option must be checked. When it is, the Fie Browser automaticallymoves or copies the sidecar files whenever you mare or copy images using the Fie Browser, so your metadata travels with the image. If it isn't, you'll have amerry old time trying to find where your keywording and metadata have gone. b HighQuaUtyPreviewaYouwantthesesewhen ,- the previews are soft and heavily pixellated,and they don't show accu- rate color.The high-qualitypreviewsletyou alarge enoughpreview see
  16. to judge things like facial expression and focus, and they're indispens- able when you're making selects or sorts. b N o w Background Processing. I strongly recommend keeping this turned off if you're in anything resembling a hurry.When it's checked, it lets th- We Browser continue to cache thumbnails and previewswhile you me thing else. Even on a fast machine, it severely degrades breground performance, and the Fie Browser takes far less time * i l A i t s cache when it's running in the foreground than it does as ~und process. the Feed~ng Cache The Fie Browser's cache holds the thumbnails, previews, sort order, and flagginginformationfor each folder at which you point it. The Fie Brows- er's Fie menu has several commands that let you work with the cache, which 1'11look at a little later, but the first order of business is to let the Fie Browser build it. When you point the File Browser at a folder of raw images for the first time, it goes to work. The first thing you'll see is a message that reads"Get- t n directoryfle list" for a brand-new folder, or "Updating directory file ig list" if the Fie Browser has already seen the folder but the contents have change&see Figure 5-3. Figure 5-3 directory sle list Status message
  17. 148 Real World Camera Raw with Adobe Photoshop CS Even with several hundred images, the "Getting directoryfile list" mes- sage flashes by so quickly that if you blink, you may miss it. The second message that appears is "Gettingfilenamethumbnail." and this one takes a little longer, since it's extractingthecamera-created thumbnailfrom the raw images--see Figure 5-3. Figure 5-3 Getting thumbnails Next, the Fie Browser reads the metadata for each image. Some ofthe metadata, such as the EXIF metadata, is generated in the camera, while other metadata, such as the Fie Properties metadata, is generated on the fly by the File Browser. Again, the File Browser displays a status message to let you know what it's doing-see Figure 5-4. The last phase of the initial cache-building process is also probably the most crucial--generating previews. In this phase, the File Browser also uses Camera Raw to build higher-quality thumbnails than the ones that appear initially. (They're downsampled versions of the result you'd get if you processed the raw file using the current Camera Default settings for the camera that shot the images in Camera Raw.) If you look closely, you can see the thumbnails updating. The status message reads "Generating filename preview"--see Figure 5-5.
  18. Figure 5-4 Getting metadata All images 82WI David Stoeddein Figure 5-5 Generating previews High-quality thumbnails All images 82001 David Stmcldein Cumem- generated thumbnails Once the Fie Browser has completed the processof generating the pre- views, it displays a message that states the number of images in the folder, indicating that it's ready for you to start working. Large previews appear almost instantaneously when you advance from one image to another, allowing you to see each image in sufficient detail to apply a yeslno flag or a more nuanced mnk.See Figure 5-6.
  19. 150 Real World Camera Raw with Adobe Photoshop CS Figure 5 4 The cachedi a e mgs All imyes 8 0 1 20 David Stoecldein Verifying Images Asecond important reason why it's always a goodidea to wait until the File Browser has generated the previews before reformattingthecameramedia is that if Camera Raw has any problem reading the images, the problems will only show up on the high-quality thumbnail and preview. The initial thumbnails are the camera-generated ones, and they don't indicate that the raw file has been read successfully. The high-quality ones do indicate that the raw file has been read successfully, so wait until you see them before erasing the raw image files From the camera media. If you do see a problem at this stage, check the second copy (ifyoumade one) or go back to the cameramedia-you haven't reformatted it yet, right? It's fairly rare for the data to get corrupted in the camera (though it does sometimes happen), so the first suspect should be the card reader. If you have only one reader available,try copying the problem images one by one. If you have a second reader available, try copying the files using the second reader. If this copy fails, try running the rescue software provided by the card vendor. If none of these suggestions work, your op- tions are to reshoot, to accept t &shs and move on, or to resort to an expensive data-recovery service. m
  20. Chapter 5: It's All About the Workilow 151 Interrupting the Cache In an emergency-ifyouneedto see and start workingwith aspecific image right now- can force the Fie Browser to read all the data and build the you preview for that image by selecting it in the File Browser. The File Browser will give preference to that image, and generate a preview quickly. You can also scroll the File Browser window to give preference to a se- ries of image+the File Browser always builds previews for those images whose thumbnails are currentlyvisible in the main window. But there's no such thing as a free lunch. When you open an image in Camera Raw, the File Browser will stop processing the rest of the images (unless you have its Preferences set to allow background processing, in which case your foreground performance will suffer).And when you bring the Fie Browser back to the foreground, it will resume building the cache. Tip: Download to Your Fastest Drive. The cache-building process is largely dependent on disk speed, so the faster the drive to which you download the raw images, the faster the File Browser will build the cache. Consider dedicating a partition on your fastest drive, the same size as your camera media, for downloading and caching your raw images. Caching Multiple Folders Some cameras create subfolders on the camera media with 100 images in each. If you use larger-capacity cards, you may have three or four image folders. The fastest way to deal with multiple folders is to copy all the im- age folders to a single enclosing folder. Then, when the copy is complete, point the Fie Browser at the enclosing folder and choose Build Cache for Subfolders from the File Browser's Fie menu. Contrary to what the online help says, Build Cache for Subfolders simply does that-it builds a cache for each subfolder in the enclosing folder, reading the thumbnails and metadata and generating previews for al the images contained in the l suhfolders. It displays a progress bar so you'll know when it's done. Wait until the Fie Browser has finished buildingits cache before you t to q do anything to the images.The typical tasks you performin the Fie Browser include renaming, sorting, flagging or ranking, applying rotation, entering keywords and IPTC metadata, and applying Camera Raw settings.
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